REPLACEMENTKITS.COM Water Pump Impeller Kit for Johnson F6B-9 — 12-Blade Neoprene Impeller with O-Ring & Gasket

This kit from REPLACEMENTKITS.COM supplies the core parts needed to refresh a water pump assembly on a range of marine engines. It replaces common OEM numbers and fits Johnson F6B-9 and many equivalent Jabsco and Indmar pump models, making it a convenient aftermarket solution for routine maintenance or emergency repair.

What exactly is included in the kit and why does it matter?

The package contains one 12-blade neoprene impeller, one matching O-ring, and one flat gasket so you have the sealing components required for a proper replacement. Having the impeller, O-ring, and gasket together ensures you replace all wear-prone parts at once and restore seal integrity and water flow.

• 1 impeller: 12 blades, approx. 2-1/4" diameter, 1-15/16" width
• 1 O-ring: matched to pump housing to prevent leaks
• 1 gasket: ensures a tight mating surface and correct spacing

How do I know this fits my Johnson or Jabsco pump?

This impeller kit is built to match the dimensions and spline drive of the Johnson F6B-9 family and several cross-reference numbers. It lists direct replacements for Johnson 09-812B-1 / 09-812B and corresponding Indmar, Sierra, Yanmar and Jabsco part numbers, so it aligns with common pump housings used across multiple boat brands.

• Compatible with Johnson F6B-9, 10-24232-1 and 10-24915-01 models
• Cross-references: Indmar S685007 / 685001; Sierra 18-3306
• Also fits Jabsco pumps such as 50410-1201 and Jabsco 13554-0001-P

What materials and build quality can I expect from this impeller?

The impeller uses neoprene premium rubber for flexible blades and a solid brass insert for the 5/8" shaft spline drive, giving a balance of durability and sealing performance. Those materials resist typical marine wear and deliver reliable service life when installed and operated within manufacturer specifications.

• Neoprene rubber blades for flexibility and wear resistance
• Brass spline insert for secure shaft engagement
• Components sized to OEM-like tolerances for straightforward replacement

Which engines and boat models commonly use this pump kit?

You'll find this pump type on several Indmar Monsoon, Hammerhead, and Raptor engines across various horsepower ratings and inboard/outboard applications. It is often installed in performance and towboat brands, so it's a common service part for owners of Supra, Moomba, MasterCraft and Tige boats and engines with Volvo Penta cross-references.

• Indmar Monsoon, Hammerhead, Raptor models (320–350HP ranges)
• Boat brands: Supra, Moomba, MasterCraft, Tige
• Volvo Penta cross-reference numbers listed in specs

Who is this for: Boat owners, marine mechanics, and fleet operators who need an OEM-compatible impeller kit for Johnson F6B-9 and equivalent pumps. It suits anyone performing scheduled water pump maintenance or replacing a worn impeller, and provides the O-ring and gasket to complete the job without sourcing separate parts.